Stephen wasn't laughing at her internally, only mildly amused at her behavior. He always thought of her as a bit high strung inside while maintaining that cool exterior. God knows Stark drove her crazy enough without him adding to it.
"France is very beautiful at night, especially the lighting here." There were more than likely beggers and thieves about, but they wouldn't have to deal with that. He blinked when she was thinking as he read a few of her thoughts, though he wouldn't let her know he had. It's a shame she had not seen the world by now. "Are you starving now or should we walk for a little while?"